Helmet comprising an occipital adjustment mechanism

A hockey or lacrosse helmet with a rear shell having a central elongated slot extending along a longitudinal axis of the helmet; a rear inner pad for facing the back and left and right side regions of the head, the rear inner pad being mounted to the rear shell; an occipital inner pad located below the rear inner pad for facing the occipital region of the head; and a single wedging member located between the rear shell and the occipital inner pad, the single wedging member being movable along the longitudinal axis of the helmet from a first position to a second position.